Malicious PDF — malware analysis report

Static analysis result for SHA-256 3149911b409e8cdf…

MALICIOUS

PDF

55.5 KB Created: 2020-08-11 14:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 648f166d0b7b43ba54d5d0d93a08e282 SHA-1: 407c23e0cfb6aa1a7b9324c2507e0b36c348f16a SHA-256: 3149911b409e8cdfaf8bed294c92aada64fcfc6464548dcae829604cf7ba902a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to downloading a form for an 'economically weaker section'. It embeds multiple external links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.com/pify?keyword=economically+weaker+section+form+pdf+download, which likely leads to further malicious content. The document body, though heavily corrupted, contains fragments of the lure text and the malicious URL.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=economically+weaker+section+form+pdf+download
    • http://files.micksmobilemusic.com/uploads/1/3/0/8/130874524/130b568125d1644.pdf
    • http://bexumeni.sheltontile.net/uploads/1/3/1/6/131637881/tokewalomuvagij.pdf
    • http://files.weavefutures.com/uploads/1/3/0/9/130969614/kaserumubilolavotaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/wekosefof.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/88046630813.pdf
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/52444423341.pdf
    • https://cdn.shopify.com/s/files/1/0440/3852/0997/files/debate_rules_for_college_students.pdf
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/new_cutting_edge_pre_intermediate_tests.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9199/files/busukupasagisoserijitiwu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/64443206804.pdf
    • https://cdn.shopify.com/s/files/1/0431/0633/6930/files/pugetusozamidumulijot.pdf
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/28301783677.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/www_icd9data_com.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/fexisuwiweb.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/nonuvef.pdf
    • https://cdn.shopify.com/s/files/1/0432/1650/2939/files/xidilopakodukorazepi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4716/files/essential_words_for_the_toefl_5th_edition_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0434/1907/4716/files/essential_words_for_the_toefl_5th_edition_free_down

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007553.bin
2abcd5dc572ff12f177de067750f5cf3ac63f417fa137cb1b887985d69c4f5c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7553 5304 bytes
font_01_sfnt_off0000874e.bin
5216ef7c7933cbb135cc98b8b6223b605811ac876c6e79b33a29357969cdd9f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x874E 10236 bytes
font_02_sfnt_off0000aa3b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA3B 4324 bytes
font_03_sfnt_off0000b83d.bin
70f5dc55a7e07e5e90f6ad1bcfe74db7875709cac57c168aa15a95510cb0f200		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB83D 6800 bytes

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